mdadm/test

#!/bin/sh
#
# run test suite for mdadm
user=`id -un`
if [ " $user" != " root" ]
then echo >&2 "test: testing can only be done as 'root'."
     exit 1;
fi

prefix='[0-9][0-9]'
if [ -n "$1" ]
then prefix=$1
fi

dir=`pwd`
mdadm=$dir/mdadm
if [ \! -x $mdadm ]
then
   echo >&2 "test: $mdadm isn't usable."
fi

# assume md0, md1, md2 exist in /dev
md0=/dev/md0 md1=/dev/md1 md2=/dev/md2
mdp0=/dev/md_d0
mdp1=/dev/md_d1

# We test mdadm on loop-back block devices.
# dir for storing files should be settable by command line maybe
targetdir=/var/tmp
size=20000
# super0, round down to multiple of 64 and substract 64
mdsize0=19904
# super00 is nested, subtract 128
mdsize00=19840
# super1.0 round down to multiple of 2, subtract 8
mdsize1=19992
mdsize1a=19988
mdsize12=19988
# super1.2 for linear: round to multiple of 2, subtract 4
mdsize1_l=18976
mdsize2_l=18976
# subtract another 4 for bitmaps
mdsize1b=19988
mdsize11=19992
mdsize11a=18944
mdsize12=19988

# ddf needs bigger devices as 32Meg is reserved!
ddfsize=65536

config=/tmp/mdadm.conf

cleanup() {
	udevadm settle
	$mdadm -Ssq 2> /dev/null
	for d in 0 1 2 3 4 5 6 7  8 9 10 11 12
	do
	    losetup -d /dev/loop$d ; # rm -f $targetdir/mdtest$d
	    rm -f /dev/disk/by-path/loop*
	done
}

trap cleanup 0 1 2 3 15

devlist=
for d in 0 1 2 3 4 5 6 7 8 9 10 11 12
do
   sz=$size
   if [ $d -gt 7 ]; then sz=$ddfsize ; fi
   [ -f $targetdir/mdtest$d ] || dd if=/dev/zero of=$targetdir/mdtest$d count=$sz bs=1K > /dev/null 2>&1
   [ -b /dev/loop$d ] || mknod /dev/loop$d b 7 $d
   if [ $d -eq 7 ]
   then
     losetup /dev/loop$d $targetdir/mdtest6 # for multipath use
   else
     losetup /dev/loop$d $targetdir/mdtest$d
   fi
   eval dev$d=/dev/loop$d
   eval file$d=$targetdir/mdtest$d
   eval devlist=\"\$devlist \$dev$d\"
   #" <-- add this quote to un-confuse vim syntax highlighting
done
path0=$dev6
path1=$dev7

ulimit -c unlimited
[ -f /proc/mdstat ] || modprobe md_mod
echo 2000 > /proc/sys/dev/raid/speed_limit_max
echo 0 > /sys/module/md_mod/parameters/start_ro

if [ " $1" = " setup" ]
then trap 0 ; exit 0
fi

# mdadm always adds --quiet, and we want to see any unexpected messages
mdadm() {
    rm -f $targetdir/stderr
    case $* in
       *-S* ) udevadm settle;;
    esac
    case $* in
       *-C* ) $mdadm 2> $targetdir/stderr --quiet "$@" --auto=yes;;
        * )   $mdadm 2> $targetdir/stderr --quiet "$@"
    esac
    rv=$?
    case $* in
       *-S* ) udevadm settle;;
    esac
    cat >&2 $targetdir/stderr
    return $rv
}

# check various things
check() {
   case $1 in
    spares )
       spares=`tr '] ' '\012\012' < /proc/mdstat | grep -c '(S)' || exit 0`
       if [ $spares -ne $2 ]
       then
          echo >&2 "ERROR expected $2 spares, found $spares"; exit 1;
       fi
      ;;
    raid* | linear )
      grep -s "active $1 " /proc/mdstat > /dev/null || {
		echo >&2 "ERROR active $1 not found" ; cat /proc/mdstat ; exit 1;}
     ;;
    resync | recovery | reshape)
      sleep 0.5
      grep -s $1 /proc/mdstat > /dev/null || {
		echo >&2 ERROR no $1 happening; cat /proc/mdstat; exit 1; }
     ;;

     nosync )
       sleep 0.5
       if grep -s -E '(resync|recovery|reshape) *=' > /dev/null /proc/mdstat ; then
		echo >&2 "ERROR resync or recovery is happening!"; cat /proc/mdstat ; exit 1;
       fi
     ;;

    wait )
      sleep 0.1
      while grep -E '(resync|recovery|reshape|check|repair) *=' > /dev/null /proc/mdstat
      do sleep 2;
      done
      ;;

    state )
       grep -s "blocks.*\[$2\]\$" /proc/mdstat > /dev/null || {
		echo >&2 "ERROR state $2 not found!"; cat /proc/mdstat ; exit 1; }
       sleep 0.5
      ;;

    bitmap )
       grep -s bitmap > /dev/null /proc/mdstat || {
		echo >&2 ERROR no bitmap ; cat /proc/mdstat ; exit 1; }
      ;;
    nobitmap )
       if grep -s "bitmap" > /dev/null /proc/mdstat
       then
		echo >&2 ERROR bitmap present ; cat /proc/mdstat ; exit 1;
       fi
      ;;

    * ) echo >&2 ERROR unknown check $1 ; exit 1;
   esac
}

no_errors() {
  if [ -s $targetdir/stderr ]
  then echo Bad errors from mdadm: ; cat $targetdir/stderr; exit 2;
  fi
}
# basic device test

testdev() {
   udevadm settle
   dev=$1
   cnt=$2
   dvsize=$3
   chunk=$4
   if [ -z "$5" ]; then
      mkfs -j $dev > /dev/null 2>&1 && fsck -fn $dev >&2
   fi
   dsize=$[dvsize/chunk]
   dsize=$[dsize*chunk]
   rasize=$[dsize*2*cnt]
   # rasize is in sectors
   if [ -n "$DEV_ROUND_K" ]; then
      rasize=$[rasize/DEV_ROUND_K/2]
      rasize=$[rasize*DEV_ROUND_K*2]
   fi
   if [ `/sbin/blockdev --getsize $dev` -eq 0 ]; then sleep 2 ; fi
   _sz=`/sbin/blockdev --getsize $dev`
   if [ $rasize -lt $_sz -o $[rasize*4/5] -gt $_sz ]
   then
     echo "ERROR: size is wrong for $dev: $cnt * $dvsize (chunk=$chunk) = $rasize, not $_sz"
     exit 1
   fi
}

rotest() {
  dev=$1
  fsck -fn $dev >&2
}

for script in tests/$prefix tests/$prefix*[^~]
do
  if [ -f "$script" ]
  then
   rm -f $targetdir/stderr
   # stop all arrays, just incase some script left an array active.
   $mdadm -Ssq 2> /dev/null
   mdadm --zero $devlist 2> /dev/null
   mdadm --zero $devlist 2> /dev/null
   # source script in a subshell, so it has access to our
   # namespace, but cannot change it.
   echo -ne "$script... "
   if ( set -ex ; . $script )  2> $targetdir/log
   then echo "succeeded"
   else echo "FAILED - see $targetdir/log for details"
       exit 1
   fi
  fi
done
exit 0